Advanced-protection HPS Manuel d'utilisateur télécharger pdf (Page 2)

INTRODUCTION

Thank you for choosing an APT Surge Protective Device

(SPD). This is a high quality, high energy surge suppressor

designed to protect sensitive equipment from damaging

transient overvoltages.

Proper installation is important to maximize performance.

Please follow steps outlined herein.

This entire Operation & Maintenance Manual should be

read prior to beginning installation. These instructions are

not intended to replace national or local codes. Follow

all applicable electrical codes to ensure compliance.

Installation of this SPD should only be performed by

qualied electrical personnel.

APT SPDs are extensively tested in accordance with industry

standards such as ANSI/IEEE C62.41.1, C62.41.2, C62.45,

C62.62, C62.72, UL 1449, UL 1283, IEC 61643, etc.

This SPD is a single-port parallel-connected device

intended for service entrance, panelboard or downstream

installation for IEEE Category C, B or A applications.

Major Industry Nomenclature Changes

Effective 2008-2009

Be aware that UL 1449 Third Edition and 2008 NEC

Article

285 generated substantial changes.

▪ The term TVSS changed to SPD

▪ Types 1, 2, 3 & 4 SPDs are created

▪ UL 1449 clamping voltage performance testing

changed from 500A to 3,000A

▪ UL 1449 added new I nominal testing (I

), which

consists of more rigorous duty-cycle testing

This SPD complies with the latest regulatory actions and

is UL Listed as such.

For further information, please review latest editions of

NEC

Art. 285, UL 1449 or contact APT Tech Support at

(800) 237-4567.

GENERAL INFORMATION

The HP & HPS families are intended for use as a Type 2

external mount SPD.

Versions without enclosures are available for internal mounting

within electrical gear. HP & HPS families are Type 4 SPDs

intended and tested for use as Type 2.

This device features internal overcurrent and overtemperature

protection that will disconnect effected surge suppression

components at the end of their useful life, but will maintain

power to the load – now unprotected. If this situation is

undesirable for the application, follow these instructions for

servicing or replacing the device.

Service of this unit consists of replacing the modules, fuses,

and/or display assembly. There are no user-serviceable parts

inside replaceable modules. Do not attempt to disassemble

modules as they are potted.

Simplied Explanation of Operation

SPDs sense overvoltage and create a momentary short

circuit to redirect harmful surge energy to earth ground.

Then they reset automatically and wait for the next surge.

This is similar to the pressure relief valve on a water

heater: pressure goes up, valve opens to relieve pressure

and then resets. In an electrical system, an SPD senses

overvoltage, shorts temporarily sending energy to ground

and then resets. SPDs are capable of repeating this

function thousands of times.

Precautionary Statement Regarding SPDs on

Ungrounded Systems

Caution – Ungrounded systems are inherently unstable and

can product excessively high line-to-ground voltages during

certain fault conditions. During these fault conditions, any

electrical equipment including an SPD, may be subjected

to voltages which exceed their designed ratings. This

information is being provided to the user so that an informed

decision can be made before installing any electrical

equipment on an ungrounded power system.

Cascade Surge Protection

For optimum surge protection, cascade or staged surge

suppression should be implemented at the service entrance

and downstream locations as appropriate. Known or expected

surge sources, as well as sensitive loads, should also have

localized surge suppression. For interconnected electronic

loads (data cabling), SPDs should also be utilized to protect

the devices on either end of the interconnecting data cables.

Parallel Connection

This is a Parallel connected SPD – not series connected. As

outlined in Figure 1 on page 2, an SPD ‘drains off’ excessive

voltage from an electrical system. Because of connection,

installation of the SPD anywhere near the equipment to be

protected is satisfactory. This effect is similar to ushing

any toilet in a house; pressure in the shower goes down.

In an electrical system, a parallel connected SPD will

remove excessive voltage off the entire system (assuming

reasonable proximity).

Tip: It is very important that wiring leads be congured as short

& straight as possible. Avoid long leads. Avoid sharp bends.

Route SPD conductors in the same conduit. Leads do not have

to be sized for the entire load – this SPD is parallel connected,

not series connected. As a generalization, 6 AWG works ne.

Unpacking & Preliminary Inspection

Inspect the entire shipping container for damage or signs

of mishandling. Remove the packing materials and further

inspect the unit for any obvious shipping damages.

If any damage was found and is a result of shipping

or handling, immediately le a claim with the shipping

company and forward a copy to APT.

SPD Types: Types 1, 2, 3, & 4

Based on Location within electrical distribution system

(also coincides with ANSI/IEEE C62.41.2 - 2002 Categories C, B & A)

Figure 1

NEC

Article 285 & UL 1449-3

1 2 3 4 5 6 7 ... 23 24

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Advanced-protection HPS Manuel d'utilisateur Page 2

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